B2ST has revealed the third part of their series of teasers for their upcoming encore concert, "Welcome BACK to B2ST Airline." In the teaser, member Hyunseung narrates his thoughts by stating, "That place makes me run, sing, and become intoxicated.� With bursts of adrenaline, that places drives me crazy.� Once more, I want to visit that place again." Their encore concert will be held for two days on February 18th and 19th at the Seoul Olympic Stadium. Check it out below: